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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies IPI50R399CPXKSA1

Name: IPI50R399CPXKSA1
Brand: Infineon Technologies
SKU: IPI50R399CPXKSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IPI50R399CPXKSA1

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-262-3 Long Leads, I2PAK, TO-262AA

Datasheet:: IPI50R399CPXKSA1.pdf

Description:: MOSFET N-CH 500V 9A TO262-3

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Product details

Overview

IPI50R399CPXKSA1 from Infineon Technologies is a 500 V, 9.5 A (T_C = 100 °C) superjunction N-channel MOSFET in TO-220FP package, featuring R_DS(on) = 399 mΩ (typ.), Q_g = 34 nC, and E_AS = 540 mJ - optimized for hard-switched PFC and auxiliary power supplies in server SMPS.

For engineers reviewing the IPI50R399CPXKSA1 datasheet, IPI50R399CPXKSA1 pinout, IPI50R399CPXKSA1 application, or IPI50R399CPXKSA1 equivalent, key selection criteria include avalanche ruggedness (E_AS), gate charge profile for ZVS/ZCS compatibility, thermal resistance (R_thJC = 1.3 K/W), and body diode reverse recovery performance (t_rr = 450 ns, Q_rr = 2.2 µC).

Technical Context

This CoolMOS™ CP device employs charge compensation technology to achieve low R_DS(on) × Q_g figure-of-merit (13.6 Ω·nC) while maintaining robust 500 V breakdown voltage and unclamped inductive switching capability. Its optimized gate structure reduces Miller capacitance (C_rss/C_iss = 7.5 %) and enables stable operation at high dV/dt rates up to 50 V/ns.

The integrated fast-recovery body diode supports discontinuous conduction mode (DCM) PFC with t_rr = 450 ns and soft recovery (Q_rr/I_rr = 0.49 µC/A), minimizing switching losses and EMI in boost converters operating at 65–100 kHz.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	500 V - withstands DC bus voltages up to 400 VAC input with 20 % margin for surge and ripple
R_DS(on)	399 mΩ (typ. @ V_GS = 10 V, T_j = 25 °C) - enables <1.5 W conduction loss at 9.5 A continuous drain current
Q_g	34 nC - supports efficient gate driving with standard 1 A peak drivers and <100 ns turn-on delay
E_AS	540 mJ (T_j = 25 °C) - sustains single-pulse inductive energy without failure in PFC choke fault conditions
t_rr	450 ns - limits diode reverse recovery loss and voltage overshoot in DCM boost stages
R_thJC	1.3 K/W - allows 9.5 A continuous operation at T_C = 100 °C with ≤12.4 W power dissipation
C_oss	44 pF (at V_DS = 25 V) - contributes to low capacitive turn-off loss and predictable zero-voltage switching behavior

Pinout & Package

TO-220FP (Full-Pak) package with isolated drain tab, vertical power flow, and screw-mount compatible footprint (lead pitch: 2.54 mm, case height: 15.75 mm). Designed for PCB mounting with minimal heatsink interface resistance.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current path output / heat sink interface	Electrically connected to metal tab; requires insulating pad when mounted to grounded heatsink
Source	Power return reference / gate drive common	Low-inductance connection point for source routing and Kelvin sense in high-frequency designs
Gate	Control terminal for channel modulation	High-impedance input requiring <34 nC charge for full enhancement; sensitive to ESD (HBM Class 1C)

Key Features

Feature	Design Value
Optimized R_DS(on) × Q_g FoM	13.6 Ω·nC - balances conduction and switching loss for 65–100 kHz PFC stages
Enhanced avalanche ruggedness	E_AS = 540 mJ - eliminates need for external snubbers in clamp-free PFC designs
Fast, soft-recovery body diode	t_rr = 450 ns, Q_rr = 2.2 µC - reduces diode-induced EMI and voltage spikes in DCM operation
Low C_rss/C_iss ratio	7.5 % - improves gate drive stability and reduces Miller-induced false turn-on risk

Applications

Server SMPS PFC Stage

Industrial Auxiliary Power Supply

Use Scenario: Boost PFC converter in 1–3 kW telecom/server power supplies operating at 65–100 kHz with universal AC input (90–264 VAC).

IC Role / Device Role / Timing Role: Main switching device in continuous conduction mode (CCM) or transition mode (TM) PFC controller stage.

Use Value: 399 mΩ R_DS(on) and 34 nC Q_g enable >96 % efficiency at full load while meeting EN 61000-3-2 harmonic limits.

Use Scenario: Flyback or forward converter supplying isolated 12 V/5 V rails for control logic and fans in PLCs and motor drives.

IC Role / Device Role / Timing Role: Primary-side switch handling 20–50 kHz switching with burst-mode light-load operation.

Use Value: 500 V rating ensures reliability across 300–400 VDC bus variations; 1.3 K/W R_thJC supports compact heatsinking in space-constrained enclosures.

LED Driver Secondary Side

UPS Inverter Half-Bridge

Use Scenario: Secondary-side synchronous rectification in constant-current LED drivers for high-bay lighting (300–400 VDC bus).

IC Role / Device Role / Timing Role: Low-side switch replacing Schottky diodes to reduce conduction loss in 100–200 kHz LLC resonant stages.

Use Value: Fast body diode (t_rr = 450 ns) enables clean commutation during dead-time; 540 mJ E_AS tolerates transient overcurrent during LED short-circuit events.

Use Scenario: High-side switch in half-bridge inverter stage of online UPS systems delivering 1–5 kVA output.

IC Role / Device Role / Timing Role: Hard-switched power switch operating at 16–20 kHz with active clamping and overcurrent protection.

Use Value: Robust 500 V V_DS withstands DC bus transients up to 450 V; TO-220FP isolation allows direct heatsink mounting without additional insulation layers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP5NK50ZFP	R_DS(on) = 750 mΩ, Q_g = 22 nC, E_AS = 220 mJ, TO-220FP	Higher conduction loss, lower gate charge, reduced avalanche capability	Preferred where cost sensitivity outweighs efficiency targets and surge immunity is less critical
IPP50R399CP	Same die, TO-220 (non-FP) package, R_thJC = 1.0 K/W, uninsulated drain tab	Requires insulated mounting hardware; higher thermal performance but no creepage advantage	Selected when maximum power density is required and mechanical isolation is managed externally

Compared with STP5NK50ZFP, IPI50R399CPXKSA1 delivers 47 % lower R_DS(on) and 2.5× higher E_AS, enabling higher efficiency and fault tolerance in mission-critical PFC; versus IPP50R399CP, it trades 0.3 K/W higher junction-to-case thermal resistance for reinforced electrical isolation and simplified assembly.

Availability

IPI50R399CPXKSA1 is available at Aetrix Electronics and suitable for server SMPS PFC stages, industrial auxiliary power supplies, and UPS inverter half-bridges requiring stable component supply and long-term industrial lifecycle support.

Supply support for IPI50R399CPXKSA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO 9001 and IATF 16949.

The CoolMOS™ CP product line targets high-efficiency, high-reliability AC-DC conversion in datacenter, industrial, and renewable energy systems, emphasizing ruggedness, low-loss switching, and ease of gate drive design.

FAQ

What is the maximum continuous drain current rating for IPI50R399CPXKSA1?

The maximum continuous drain current is 9.5 A at case temperature T_C = 100 °C, derating linearly to 0 A at T_C = 175 °C. This rating assumes proper heatsinking with R_thJC = 1.3 K/W and accounts for both conduction loss and safe operating area (SOA) limits under DC conditions.

Does IPI50R399CPXKSA1 have an integrated body diode, and how is its performance characterized?

Yes, it features an integrated fast-recovery epitaxial body diode with t_rr = 450 ns (typ.), Q_rr = 2.2 µC (typ.), and softness factor S = 0.49. These values are measured at I_F = 9.5 A, di/dt = 100 A/µs, and T_j = 125 °C, enabling low-noise commutation in DCM PFC and flyback topologies.

Can IPI50R399CPXKSA1 be used in zero-voltage switching (ZVS) circuits?

Yes - its low C_oss (44 pF at 25 V), low C_rss/C_iss ratio (7.5 %), and controlled Q_g profile (34 nC) support reliable ZVS operation in LLC resonant converters up to 300 kHz, provided gate drive strength and dead-time are tuned per the application's resonant tank parameters.

What is the recommended gate resistor value for hard-switched PFC applications?

A gate resistor of 10–15 Ω is recommended for 65–100 kHz hard-switched PFC, balancing turn-on speed (to minimize overlap loss) and dV/dt control (to limit EMI and prevent spurious turn-on). Layout-dependent parasitic inductance may require empirical tuning between 8–22 Ω based on oscilloscope validation of V_GS ringing and V_DS overshoot.

IPI50R399CPXKSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: CoolMOS™

Package/Case:: TO-262-3 Long Leads, I2PAK, TO-262AA

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 500 V

Current - Continuous Drain (Id) @ 25°C:: 9A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 10V

Rds On (Max) @ Id, Vgs:: 399mOhm @ 4.9A, 10V

Vgs(th) (Max) @ Id:: 3.5V @ 330µA

Gate Charge (Qg) (Max) @ Vgs:: 23 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 890 pF @ 100 V

FET Feature:: -

Power Dissipation (Max):: 83W (Tc)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: PG-TO262-3

IPI50R399CPXKSA1 FAQ

1.How can I place an order for IPI50R399CPXKSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IPI50R399CPXKSA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for IPI50R399CPXKSA1 reliable?

The price and inventory of IPI50R399CPXKSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IPI50R399CPXKSA1 is usually 5 days.

3.What payment methods are accepted for IPI50R399CPXKSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IPI50R399CPXKSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IPI50R399CPXKSA1?

IPI50R399CPXKSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IPI50R399CPXKSA1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for IPI50R399CPXKSA1?

For technical support, including IPI50R399CPXKSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IPI50R399CPXKSA1 requirements.

6.How does Aetrix verify that IPI50R399CPXKSA1 is sourced from the original manufacturer or authorized distributors?

All IPI50R399CPXKSA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IPI50R399CPXKSA1 meets industry standards.

7.What is the process for return or replacement of IPI50R399CPXKSA1?

All IPI50R399CPXKSA1 units undergo pre-shipment inspection (PSI). If there is an issue with IPI50R399CPXKSA1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The IPI50R399CPXKSA1 part is unused and in its original packaging.

Return procedure for IPI50R399CPXKSA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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